Jeff Gordon driver of the #24 Drive to End Hunger Chevrolet adjusts his earplugs prior to the start of the first practice for the 39th Annual Pennsylvania 400 at Pocono Raceway Friday afternoon.

Jeff Gordon driver of the #24 Drive to End Hunger Chevrolet adjusts his earplugs prior to the start of the first practice for the 39th Annual Pennsylvania 400 at Pocono Raceway Friday afternoon. (KEVIN MINGORA / THE MORNING CALL)

Jeff Gordon driver of the #24 Drive to End Hunger Chevrolet adjusts his earplugs prior to the start of the first practice for the 39th Annual Pennsylvania 400 at Pocono Raceway Friday afternoon.